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Greenland is a part of the Kingdom of Denmark, along with Denmark and the Faroe Islands. The Greenland Self-Government has legislative power in areas that have been or are transferred from the Danish state to the Greenland Self-Government, including the fisheries sector. The country's economy is generally sea-oriented, with fishing being the primary industry. Greenland has 22 ports, but not all of them are accessible throughout the year. The country's deeply indented coastline is 39,330 kilometers long. The fishing zone is approximately 186,552 square kilometers, and the continental shelf is about 260,007 square kilometers. In 2014, 297 Greenlandic fishing vessels were registered in the Danish Maritime Authority's Registry. The fishing fleet for management purposes is mainly split between coastal fishing and ocean fishing. Coastal fleet are less than 120 GT, however there are exemptions. This fleet is mainly managed by fishing licenses within both the Individual Transferable Quota system (ITQ) and free quota within TAC limits. The main commercial species in Greenlandic waters are demersal species, however crustaceans and pelagic species also play a major role in the industry. In the offshore fishery, traditionally two species are major subjects; shrimp and Greenland halibut but from 2012 the Atlantic mackerel has also become increasingly important. The shrimp fishery is managed by an ITQ system and the Greenland halibut fishery is managed by licensing and TAC restrictions. Marine capture production has been increasing during the last years between 209,000 tonnes and 292,000 tonnes from 2010 to 2014. The bulk of the catches are Atlantic mackerel (86,000 tonnes) and Northern prawn (78,000 tonnes). No inland catches are reported. The catch of marine mammals as a traditional activity of the Inuit culture remains active in Greenland, even though it raises some contention between Greenland and other non-whaling countries. Aquaculture production is non-existent in Greenland due to the lack of experience with aquaculture, the very high costs of operation in Greenland, and the adverse weather conditions. The fisheries sector plays a significant role in the Greenland economy and in domestic food consumption. In 2014, exports of fish and fishery products were worth more than 95% of total merchandise trade of the country, valued at USD 515 million. The main products exported were shrimp, halibut, cod and crab. In the same year, Greenland's imports of fish and fishery products were valued at only USD 0.6 million. The annual apparent per capita fish consumption is estimated to be one of the highest in the world, with 86.9 kg per capita in 2013. In 2013, the fisheries sector provided around 6,800 jobs in Greenland. Despite falling shrimp prices, the fisheries sector remains under pressure. Overfishing and declining levels of shrimp in Greenlandic waters led to a reduction of the shrimp quota by 25% from 2012 to 2013. Greenland has fishing agreements with the Faroe Islands, Norway, Russia, Iceland, and the EU. The agreement with the EU is the only agreement in which the granting of fishing rights in Greenlandic waters is matched by an annual economic contribution. The other agreements ensure Greenland's rights to fish in other nations' waters, while other nations are granted the same rights for fishing in Greenlandic waters. The island's dependence on the fish industry, which is susceptible to problems of overfishing and fluctuating prices, has become one of the main challenges in the late 20th century. Therefore, Greenland attempted to diversify its economy, with much emphasis placed on the tourist industry. Greenland is also a focus of the EU's Arctic policy. Greenland has been party to the 1982 UN Convention of the Law of the Sea since November 16, 2004, when it was ratified by the Kingdom of Denmark.